Journal of Pest Science最新文献

{"title":"Physalis floridana suppresses the expression of trehalase gene HvTREs in Henosepilachna vigintioctopunctata (Coleoptera: Coccinellidae) for defense against herbivorous insects","authors":"Xian-Zhong Wang, Si-Jing Wan, Bin-Er He, Shuang-Le Wang, Tian-Wen Wang, Liu-He Yu, Shi-Gui Wang, Hui-Zhong Wang, Bin Tang, Jiang-Jie Lu","doi":"10.1007/s10340-024-01826-6","DOIUrl":"https://doi.org/10.1007/s10340-024-01826-6","url":null,"abstract":"<p>Plants use various secondary chemicals in their chemical defense against herbivores. While botanical insecticides are crucial for reducing the reliance on chemical pesticides, the development of plant-derived insecticides remains limited. In this study, we fed <i>Henosepilachna vigintioctopunctata</i> with three different host plants (<i>Solanum nigrum</i>, <i>Solanum tuberosum</i>, and <i>Physalis floridana</i>) and observed that feeding on <i>P. floridana</i> led to changes in the body size and a significantly high mortality rate. Through transcriptome analysis, it was found that the trehalose metabolism pathway of <i>H. vigintioctopunctata</i> changed significantly under different host feeding conditions, especially since the expression level of the trehalase gene was extremely different. We subsequently identified eight transcripts of <i>HvTREs</i> and analyzed their evolution and structure. Among them, significant differences are observed in the relative expression levels of <i>HvTRE1-5</i> in <i>H. vigintioctopunctata</i> after the fourth instar and were affected by different plant diets. Compared with the natural host<i> S. nigrum</i>, the larvae that fed on <i>P. floridana</i> significantly reduced the contents of trehalose, glucose and glycogen and significantly affected the trehalase activity. Knockdown of <i>HvTRE1-5</i> by RNAi increased mortality at the <i>H. vigintioctopunctata</i> prepupation stage, suggesting that <i>HvTRE1-5</i> is important for <i>H. vigintioctopunctata</i> pupation. This study provides new insights into developing of green control methods for <i>H. vigintioctopunctata</i> and offers a valuable example for understanding the interaction between host plants and herbivorous insects.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"1 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141915207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unbiased sequence analysis of vgsc gene reveals circulation of novel and known knock-down resistance mutations in Culex pipiens, challenging vector control measures","authors":"Verena Pichler, Kentaro Itokawa, Beniamino Caputo, Carlo Maria De Marco, Paola Serini, Romeo Bellini, Rodolfo Veronesi, Claudio De Liberato, Federico Romiti, Daniele Arnoldi, Annapaola Rizzoli, Riccardo Paolo Lia, Domenico Otranto, Antonios Michaelakis, Marina Bisia, Noboru Minakawa, Shinji Kasai, Alessandra della Torre","doi":"10.1007/s10340-024-01818-6","DOIUrl":"https://doi.org/10.1007/s10340-024-01818-6","url":null,"abstract":"<p>Pyrethroids, targeting the voltage gated sodium channel (VGSC), are fundamental for the control of arboviral disease circulation. The spread of pyrethroid resistance among vector species represents thus a major public health concern. <i>Culex pipiens</i> is one of the most abundant European mosquito species and main vector of West Nile virus, leading cause of arboviral encephalitis worldwide. Despite this, monitoring of its resistance status and the understanding of underlying mechanisms are widely neglected. Herein, we performed an oligo-hybridization capture approach on 82 <i>Cx. pipiens</i> specimens from Italy and Greece to investigate the whole coding sequence of the <i>vgsc</i> gene for the presence of known and potential knock-down resistance (<i>kdr</i>) mutations associated with target-site resistance to pyrethroids in insects. Among the 26 non-synonymous substitutions revealed by the analysis, the super-<i>kdr</i> haplotype—i.e. the association of <i>kdr</i>-alleles 918T and 1014F, known for conferring a strongly enhanced resistance phenotype in <i>Musca domestica</i> – was revealed for the first time in mosquitoes. Three more potential <i>kdr</i> alleles were detected for the first time in <i>Cx. pipiens</i> and multiple <i>kdr</i> variants were observed for locus 1014, with allele 1014F, reaching frequencies &gt; 80%. Overall, results depict a worrisome situation that could affect the ability to control West Nile virus outbreaks in southern Europe. To avoid this, resistance monitoring needs to be intensified and an enhancement of the diagnostic tool box for the easy detection of different <i>kdr</i>-variants (including in particular the super-<i>kdr</i> haplotype) and for subsequent functional studies on the resistance phenotype of detected variants, is required.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"13 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141909295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Potential of blue light-emitting diodes (LEDs) to disturb whiteflies on the crop: a new push–pull strategy?","authors":"Maria Athanasiadou, Robin Seger, Rainer Meyhöfer","doi":"10.1007/s10340-024-01822-w","DOIUrl":"https://doi.org/10.1007/s10340-024-01822-w","url":null,"abstract":"<p>Mass trapping can be a crucial component of a push–pull strategy, which involves deterrence of pests from a crop (push), while luring them toward an attractive source e.g., a trap (pull). In this study, we explored the effect of blue and blue + UV LEDs on the dispersal of greenhouse whiteflies settled on tomato plants (“push” factor) and the contribution of a yellow sticky trap (YST) and a green LED-enhanced YST (green LED trap) on their recapture after take-off (“pull” factor), in controlled conditions. In following scaling-up experiments in the greenhouse, we tested the effect of different blue spotlight arrangements and intensities on whitefly dispersal, in the presence of a green LED trap. Number of dispersed and trapped whiteflies was counted and the results revealed that blue and blue + UV LEDs increased the dispersed whiteflies by twofold compared to the control without deterrent LEDs and 87–90% of them were captured on a green LED trap. In the greenhouse, high-intensity blue spotlights (186 μmol/m²/s) deterred nearly 50% of whiteflies from the plants and more than half of them were recaptured, regardless the different arrangement of the blue spotlights. The green LED trap was at least twice as attractive as the YST, and in the greenhouse, it captured nearly 12 times more whiteflies in the presence of high-intensity deterrent blue spotlights, compared to the control. These findings provide significant implications for improving targeted whitefly control techniques and can lead to the development of new push–pull strategies.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"24 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141909298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Susceptibility of Dalbulus maidis to insect-pathogenic fungi: unveiling the protective role of brochosomes and self-cleaning behavior","authors":"Rogerio Biaggioni Lopes, Marcos Faria, Charles Martins Oliveira","doi":"10.1007/s10340-024-01823-9","DOIUrl":"https://doi.org/10.1007/s10340-024-01823-9","url":null,"abstract":"<p>The corn leafhopper, <i>Dalbulus maidis</i> (Hemiptera, Cicadellidae), is an important pest of maize in Latin America, transmitting plant pathogens that impact grain production. Recently, mycopesticides have been considered as an alternative for the biological control of <i>D. maidis</i> populations, but there is controversy surrounding the efficacy of these products. We assessed the susceptibility of <i>D. maidis</i> to invertebrate-pathogenic fungi and, for the first time, investigated the protective role of the protein-lipid coat of brochosomes on the insect integument as a barrier against infections. Adult mortality was lower than 35% seven days after exposure to maize plants sprayed with water + surfactant-based conidia suspensions of 31 fungal strains from three different genera (<i>Beauveria</i>, <i>Cordyceps</i> and <i>Metarhizium</i>). Direct application of conidia suspensions on adults did not increase significantly the mortality rates when compared to adults exposed to contaminated surfaces. Conidia in water + surfactant readily adhered and germinated on detached forewings of <i>D. maidis</i> from which brochosomes were removed, but wings coated with this protein-lipid layer repelled droplets. Dry conidia easily adhered to brochosome-coated wings and their germination was not affected, although the methodical self-cleaning behavior of the adults effectively dislodged most conidia (either in suspensions or as a dry powder) from insect’s body after treatment. In conclusion, brochosomes and self-cleaning together efficiently prevent adhesion of conidia to <i>D. maidis</i> cuticle, serving as important barriers against fungal invasion and decreasing insect mortality. Our study highlights the importance of combining mycopesticides with effective adjuvants in spray applications to enhance infection rates and successfully control <i>D. maidis</i> populations.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"75 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141891859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Differential induction of JA/SA determines plant defense against successive leaf-chewing and phloem-feeding insects","authors":"Yu-Xiao Liu, Wen-Hao Han, Jun-Xia Wang, Feng-Bin Zhang, Shun-Xia Ji, Yu-Wei Zhong, Shu-Sheng Liu, Xiao-Wei Wang","doi":"10.1007/s10340-024-01821-x","DOIUrl":"https://doi.org/10.1007/s10340-024-01821-x","url":null,"abstract":"<p>Plants face an array of insect herbivores and have evolved complex defense approaches against various insect feeding strategies. However, little is known about how plants respond to successive attacks by herbivores with different feeding modes and coordinate their diverse defense mechanisms. In this study, we unveil that inducible jasmonic acid (JA) accumulation in response to leaf-chewing insects augments plant resistance and repellence to sequential leaf-chewing insect (caterpillar) and phloem-feeding insect (whitefly) infestations. Conversely, constitutive and whitefly inducible salicylic acid (SA) accumulation exclusively bolsters defense against later-stage whitefly invasion. Through assessments of herbivore performance and preferences on wild-type, JA-deficient, and SA-deficient plants, we show that JA/SA levels regulate plant resistance to both initial and sequential herbivores. Notably, JA or SA accumulation due to caterpillar or whitefly attacks does not substantially affect constitutive levels of the other compound, despite their antagonistic crosstalk. Furthermore, exogenous JA application in tobacco elicits efficient defense against successive caterpillar and whitefly assaults, surpassing SA's efficacy, albeit with associated growth penalties. Our discoveries demonstrate that plants can tailor their defense strategies against initial and sequential insects with different feeding modes. This customized defense is facilitated by JA/SA responses and their intricate cross-talk while taking account of the growth-defense trade-off.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"51 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141877695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A potential acaricide of Moutan Cortex essential oil encapsulated in nanoemulsion and mesoporous silica nanoparticles against the house dust mite Dermatophagoides farinae","authors":"Qiao Teng, Yuanyuan Li, Yuanyuan Cai, Junjie Guo, Minghui Zou, Qiqi Xue, Xiaoniu Tang, Xiangzi Li, Jinhong Zhao","doi":"10.1007/s10340-024-01820-y","DOIUrl":"https://doi.org/10.1007/s10340-024-01820-y","url":null,"abstract":"<p>Moutan Cortex essential oil (MCEO) is considered to be a promising botanical insecticide. However, like most oils, MECO has several limitations, including instability and poor solubility. Nanoencapsulation technology is an excellent strategy for stabilizing essential oils because of its controlled release, enhanced efficacy, and strengthened biological activity. The present study investigated the acaricidal efficacy of pure MCEO and its encapsulated nanoemulsion (NE) and mesoporous silica nanoparticles (MSNs) against the house dust mite <i>Dermatophagoides farinae</i> using contact bioassays, fumigant bioassays, repellent bioassays, and the observation of toxic symptoms. MCEO-MSNs obtained in the study successfully encapsulated MCEO with an encapsulation efficiency of 63.83%. The acaricidal mortality experiments revealed that MCEO-NE and MCEO-MSN showed more significant toxicity against <i>D. farinae</i> than did pure MCEO. The nanomaterials showed better larvicidal and nymphicidal activities than pure MCEO at a high concentration (12-h LC₉₀). Notably, the repellent effect experiment showed that MCEO-NE and MCEO-MSN had long-term and stable repellent effects on <i>D. farinae</i>, indicating the sustained release and persistence of the nanomaterials. More toxicity symptoms were observed in the IM-type group than in the KD-type group, suggesting that the MCEO nanoparticles have adverse effects on the respiratory system. Nanomaterials and MCEO promoted superoxide dismutase (SOD) activity and inhibited acetylcholinesterase (AChE) activity in <i>D. farinae</i>. In addition, the binding sites of paeonol to SOD and AChE were found through molecular docking. These findings demonstrate the potential of MCEO as a biological acaricide, which merits further investigation.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"45 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141862341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interspecific predation of a native herbivore facilitates colonization by fall armyworms, Spodoptera frugiperda","authors":"Yingying Song, Kangwen Sun, Sen Guo, Zhaoke Dong, Ritao Qu, Hongying Cui, Wenxiu Guo, Baohua Ye, Lili Li, Yuyong Liang, Xingyuan Men","doi":"10.1007/s10340-024-01824-8","DOIUrl":"https://doi.org/10.1007/s10340-024-01824-8","url":null,"abstract":"<p><i>Spodoptera frugiperda</i> is a newly invasive pest in China, often sharing the same feeding niche with native <i>S. exigua</i>. To clarify the competitive displacement, colonization and potential threat to crops by <i>S. frugiperda</i>, the cannibalism and predation behavior, feeding preferences, development and reproduction of both species under laboratory conditions, as well as the population dynamics and damage to maize plants in the field, were studied. Results found that food scarcity intensified interspecific predation between <i>S. frugiperda</i> and <i>S. exigua</i>, but the survival rate of 4th instar <i>S. frugiperda</i> was not significantly influenced (&gt; 93%; <i>P</i> &gt; 0.05). Although <i>S. frugiperda</i> exhibited less aggressive behaviors, its cannibalism coefficient and attack intensity were significantly higher than those of <i>S. exigua</i> (<i>P</i> &lt; 0.05). Moreover, <i>S. frugiperda</i> showed a higher feeding preference for mechanically lethal insects when the maize leaf supply was insufficient. Additionally, a combined diet of maize leaves and lethal insects significantly increased their pupal weight and fecundity (<i>P</i> &lt; 0.05)<i>.</i> Field trials showed that when <i>S. frugiperda</i> and <i>S. exigua</i> co-occurred, the population of <i>S. frugiperda</i> at mature stage was similar to that after the intraspecific treatment, and seriously damaged maize plants. These results suggested that interspecific predation by <i>S. frugiperda</i> on <i>S. exigua</i> not only conferred an obvious advantage, but may also promote its development and reproduction, and facilitated its colonization in the invaded area. Our results provide an understanding of the rapid colonization mechanisms of <i>S. frugiperda</i> and will assist development of integrated management strategies.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"85 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141862386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dual effects of tomato chlorosis virus on its whitefly vector and its host plant to facilitate viral spread","authors":"Jicheng Wang, Ying Liu, Yuxin Zhang, Penghao Qin, Jie Li, Jixing Xia, Youjun Zhang, Dong Chu","doi":"10.1007/s10340-024-01814-w","DOIUrl":"https://doi.org/10.1007/s10340-024-01814-w","url":null,"abstract":"<p>Tomato chlorosis virus (ToCV) causes widespread infections in tomatoes globally, rapidly spreading in China is closely associated with the dominant whitefly, <i>Bemisia tabaci</i> (Gennadius) Mediterranean (MED). Viruliferous whiteflies have been reported to have shown preference for healthy tomato plants and thus greatly facilitate the spread of this virus. However, the mechanism underlying the change in the host selection behavior is yet unknown. We studied the effects of ToCV infection on the volatile emissions of tomato plants to determine the main volatiles associated with host selectivity by <i>B</i>. <i>tabaci</i> MED. Gas chromatography mass spectrometry (GC-MS) analyses revealed that ToCV infection significantly altered concentrations of 11 volatile compounds. Notably, the attractive <i>p</i>-ethylacetophenone, decreased, while the repellent butylated hydroxytoluene increased. RT-qPCR showed significant expression changes in 10 odorant binding protein (OBP) genes and 11 chemosensory protein (CSP) genes in viruliferous whiteflies compared to non-viruliferous whiteflies. RNA interference indicated that silencing <i>OBP-17</i> or <i>CSP-1</i> triggered a strong repellent response from <i>B. tabaci</i> toward tomatoes. Furthermore, <i>OBP-17</i> expression rose notably with <i>p</i>-ethylacetophenone exposure, with both OBP-17 and CSP-1 exhibiting strong binding affinity for this compound, having dissociation constants of <i>K</i>_{D OBP-17} = 17.24 µmol/L and <i>K</i>_{D CSP-1} = 15.02 µmol/L, respectively. In conclusion, our study revealed dual effects of ToCV on its vectoring whitefly as well as its host plant, which together facilitate the spread of the virus. This novel insight into the epidemiological mechanisms of insect-vectored plant viruses may help to develop new strategies to control these exceedingly important agricultural pests.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"74 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141857650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reversal of practical resistance in fall armyworm to Cry1F maize: a case report on the resistance to susceptibility in Bt crops from the southeastern USA","authors":"Tiago Silva, Gregory A. Sword, Andie Miller, Jawwad A. Qureshi, Graham P. Head, Dawson D. Kerns, Juan Luis Jurat-Fuentes, James Villegas, Tyler B. Towles, Xinzhi Ni, Francis P. F. Reay-Jones, Daniel Carrillo, Donald R. Cook, Chris Daves, Michael J. Stout, Ben Thrash, Silvana V. Paula-Moraes, Shucong Lin, Bhavana Patla, Ying Niu, Caroline I. R. Sakuno, Fangneng Huang","doi":"10.1007/s10340-024-01804-y","DOIUrl":"https://doi.org/10.1007/s10340-024-01804-y","url":null,"abstract":"<p>The fall armyworm, <i>Spodoptera frugiperda</i>, is a polyphagous pest in the Americas and a target of Bt crops. A study from 2011-2013 demonstrated practical resistance of <i>S. frugiperda</i> to Cry1F maize in the southeastern coastal region of the U.S. In this study, diet-overlay and leaf tissue bioassays were conducted to determine the susceptibility to four common Bt proteins in maize (Cry1F, Cry1A.105, Cry2Ab2, and Vip3Aa) in 23 <i>S. frugiperda</i> populations collected during 2021-2022 from seven southern U.S. states, including nine populations from the southeastern coastal region. In the diet-overlay bioassays with Cry1F, 22 populations were equally or more susceptible than a susceptible reference, with a single population showing an increased susceptibility ratio (LC₅₀ of field population/LC₅₀ of the susceptible strain) of 1.97. Susceptibility ratios of the 23 populations ranged from &lt;0.15 to 4.67 for Cry1A.105 and &lt;0.12 to 5.04 for Vip3Aa. Three populations exhibited an LC₅₀ &gt;tenfold greater than the susceptible strain to Cry2Ab2. Altogether, the study did not provide evidence of practical resistance in <i>S. frugiperda</i> to the four Bt proteins. Instead, the results show that the recently collected populations were susceptible to Cry1F, Cry1A.105, and Vip3Aa. The Bt susceptibility was consistent across geographical locations and host plants. Results from the leaf tissue assays confirmed the findings of the diet-overlay bioassays. The reversed Cry1F susceptibility in <i>S. frugiperda</i> identified in this study represents the first case of documented practical resistance reverting to susceptible status in Bt crop-insect systems and thus has important implications for resistance management.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"29 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141768582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The use of the juvenoid pyriproxyfen accelerates sexual maturity in mass-reared Anastrepha ludens tephritid males but reduces their tolerance to chilling and to starvation","authors":"José Arredondo, Juan F. Aguirre-Medina, José S. Meza-Hernández, Jorge Cancino, Francisco Díaz-Fleischer","doi":"10.1007/s10340-024-01813-x","DOIUrl":"https://doi.org/10.1007/s10340-024-01813-x","url":null,"abstract":"<p>The Sterile Insect Technique (SIT) is a system based on the release of millions of sterile insects to prevent the reproduction of specific pest populations. However, to improve the efficacy of the SIT, sterile males must reach sexual maturity before being released to increase their probability of mating with wild females. Treatments with juvenile hormone (JH) analogs, such as pyriproxyfen (PPF), accelerate sexual maturity in sterile <i>Anastrepha ludens</i> (Loew) (Diptera: Tephritidae) males. We hypothesized that speeding up this life-history trait can affect male resistance to stressors such as chilling and starvation. In this study, we compared some quality control parameters of flies of two different strains, selected to resist desiccation (DR) and non-selected flies (NS), treated with PPF, and subsequently exposed to starvation and pre-release chilling periods. We used males that were treated with PPF after emergence. The results showed that, from 4 to 6 days of age, DR PPF-fed males mated less than NS PPF-fed males. DR and NS males obtained a similar number of copulations at 7 days of age. After chilling, survival was higher in DR than in NS males. In addition, NS males showed a slight advantage in number of copulations when they reached 5 days of age but not at 6 and 7 days of age. Chill-coma recovery time was longer in PPF-fed flies than in control flies. Moreover, PPF-fed flies obtained less copulations after exposure to chilling at 5 days of age compared to non-chilled flies. These results indicate that sexual maturity is accelerated in PPF-fed males, especially in NS flies. However, using PPF as a pre-release treatment for <i>A. ludens</i> results in a reduction in male quality, regardless of whether they are DR or NS.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"36 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141768569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}